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Technological Solutions for Realising an Active Gurney Flap for Green Rotorcraft Applications, Based on Piezoelectrics and Electromagnets

[+] Author Affiliations
Gianluca Diodati, Monica Ciminello, Antonio Concilio

The Italian Aerospace Research Centre (CIRA), Capua, CE, Italy

Paper No. SMASIS2011-4940, pp. 509-516; 8 pages
doi:10.1115/SMASIS2011-4940
From:
  • ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1
  • Scottsdale, Arizona, USA, September 18–21, 2011
  • ISBN: 978-0-7918-5471-6
  • Copyright © 2011 by ASME

abstract

Gurney flaps are small devices whose dimensions are usually percentage units of the airfoil chord. Liebeck, first hypothesized that the Gurney flap effectively could change the flow field in the region of the trailing edge by introducing two contra-rotating vortices behind the flap, therein altering Kutta’s condition and circulation. In turn, this helps avoiding flow separation and thus allowing the achievement of higher angles of attack before the stall condition occurs. This paper presents preliminary investigations performed on different, original and feasible technological solutions, addressed at realizing Gurney flaps for rotorcraft smart blades.

Copyright © 2011 by ASME

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